Hi @Phineas
Welcome to the Power Apps Portals. Sure I will try to answer simply.
Pre:
1. Portal creation from Blank or Dataverse starter portal
Dataverse:
1. Create Table and associated columns as per your need.
2. Choose Form > Main Form > Design your form to render it in Entity list / Entity Form
Branding / Theme:
1. Choose your theme in the portal studio according to your need.
2. Customise it if you require or choose from any existing themes available to make the user's appearance appealing.
Section A: Entity Form / Entity list ( Data Rendering)
1. Start with creating a web page for entity form or entity list. This is the easiest way
2. Add the Entity list / Entity Form component on the page
3. Select the Entity list / Form Component
4. On the right pane > Create new > give a name "List_Table Name"
5. Choose your table and views
6. For every manipulation like create, view and edit > Repeat Section A ( Step 1 to Step 4)
In Portal management:
1. under security > Table permissions
2. Create new permission > select your table
3. Apply proper privileges
4. Add Web roles like Administrators, Authenticated users, or your custom web roles
Note: Portal management steps are significant and it is a must-do.
In Portal studio:
Once you are done. Sync configuration and Browse the Website. Press Ctrl + F5
Hope it helps.
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